Question: Which run-of-the-river hydro power station has highest installed capacity?
Paraphrase: What's the most highly installed run-of-the-river hydro power station?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q1411996 . ?ent wdt:P2109 ?obj } ORDER BY DESC(?obj)LIMIT 5 
Answer: Barrage du Seujet, Kraftwerk Brugg, Karcham Wangtoo Hydroelectric Plant, Suki Kinari Hydropower Project, Ratle Hydroelectric Plant